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    • 51. 发明专利
    • INSIDE-OF-CONDUIT DIAGNOSTIC APPARATUS
    • JPH10318727A
    • 1998-12-04
    • JP12887897
    • 1997-05-19
    • NIPPON TELEGRAPH & TELEPHONENTT ADVANCED TECH KKHORII KYOYUKIISHIHARA SANGYO KAISHA
    • TSURUMI SHIGEYUKIISHII YOSHIICHIHORII KIYOYUKISAKAGUCHI TAKEHIKO
    • G01B11/24G01B11/30G01N21/88G01N21/954
    • PROBLEM TO BE SOLVED: To obtain an inside-of-conduit diagnostic apparatus whose structure is simple, by which a defect on the inside wall of a long pipe is detected and in which a parachute is not projected inside a photographed image by a method wherein illumination light is supplied to a wall surface inside a conduit, reflected light from the whole circumference is received so as to be image-formed as an image without a gap the image is transmitted by an image transmission means. SOLUTION: An inside-of-conduit diagnostic apparatus is provided with a light-receiving means as a conical prism 63, and with an image formation lens 31 which forms an image at a bundle-type image fiber 36. It is constituted of an image fiber as a transmission means around it and of a bundle fiber 64 for illumination light. A parachute 52 is attached so as to be freely rotatable, and a force in an advance direction and a turning force are generated by a whirling flow inside a pipe. The image of a flaw or the like existing on a pipe wall is incident on the conical prism 63, it is totally reflected by an opposite slope, it is incident on the image formation lens 31 at the image fiber 64, and it is image-formed on the end face of the bundle-type image fiber 36 so as to be transmitted. A beam of light which is transmitted through the fiber 64 which is arranged in a multilayer concentric shape on the outer circumference of the image fiber 36 is reflected by the slope of the prism 63 equally to the incident light so as to irradiate an imaging range.
    • 52. 发明专利
    • POWDER TRANSPORTING DEVICE
    • JPH10175735A
    • 1998-06-30
    • JP33879796
    • 1996-12-18
    • NAGATO KKHORII KYOYUKI
    • SAITO MASAYUKIHORII KIYOYUKI
    • B65G53/28B65G53/42B65G53/66
    • PROBLEM TO BE SOLVED: To easily evade clogging of a transport pipe of powder by arranging a conical body so that the vertex may be located within a sucking port, radially providing an air port from the air supply path of this center part, and sucking powder from a gap of the conical body and the inner wall of the sucking port of the transport pipe by blowing compressed air. SOLUTION: A conical body 3 is provided so that the vertex may be located within a sucking port 2 in opposition to the sucking port 2 of the lower end part of a transport pipe 1. In the center part of this conical part 3, an air supply path 31 exists toward the vertex of the conical body 3. An air port 32 is radially provided around this air supply path 31. The air supply path 31 is provided with a pressure regulating valve 33 for supplying compressed air and regulating pressure of the compressed air. The conical body 3 is fixed to a hopper 4 by using a fixing ring 5 and powder is sucked from a gap with the inner wall of the sucking port 2 of the transport pipe 1. Thus, clogging of the transport pipe 1 due to powder can be easily evaded and prevented and an effective powder transportation can be performed.
    • 56. 发明专利
    • METHOD FOR PASSING OPTICAL FIBER
    • JPH08327865A
    • 1996-12-13
    • JP12868095
    • 1995-05-26
    • HORII KYOYUKISAITO YOSHIFURU
    • HORII KIYOYUKISAITOU YOSHIFURU
    • G02B6/44G02B6/46H02G1/06
    • PURPOSE: To make it possible to efficiently pass an optical fiber without damaging the fiber even in cases of a small diameter pipe-line, a square pipeline and a tape-like optical fiber, etc., by driving and passing the optical fiber by the progressive waves generated by an ultrasonic vibrator disposed in the pipeline. CONSTITUTION: The progressing waves generated by the phase control of ultrasonic vibration are utilized as driving and feeding force in passing the optical fiber 3 into the pipeline 1. Namely, the pipeline 1 is provided with the ultrasonic vibrator 2 so that the diameter is smaller than the inside diameter of the pipeline. The ultrasonic vibrator 2 is so formed that its inside surface side comes into contact with the optical fiber 3. The ultrasonic vibrators 2 are preferably installed in plural places in tandem at the pipeline 1. The ultrasonic vibrators are required to be installed at plural points particularly in the case of the passing the fiber at a long distance. The intervals of the installation for this purpose may be determined by taking the shape, unit weight and passing distance of optical fiber and the driving and passing force of progressive waves into consideration.